12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

boost at cruise????

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Old Mar 20, 2008 | 08:49 AM
  #1  
pwrtripls1's Avatar
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From: Katy, TX off north Mason Road.
boost at cruise????

I've got a buddy at work asking me this so I figured I'd pass it on to you guys. He has a 95' 2wd ex cab 5 speed. Just the regular pump tweeks, advanced timing a little, 4" turbo back, BHAF, and cross drilled exhaust housing. He says at 65mph he is running 10psi on flat ground at 570* egt. The boost sounds a little high to me but then again I dont have a second gen.

What do yall think, whats normal?
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Old Mar 20, 2008 | 10:00 AM
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infidel's Avatar
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From: Montana
I usually run more like 5-7 psi at the same speed.
EGTs sound about right.
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Old Mar 20, 2008 | 10:30 AM
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mine runs about 8 psi an egts some were around there
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Old Mar 20, 2008 | 10:33 AM
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Diesel Dave2's Avatar
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I run between 12 and 15PSI and 650 EGT at 75 to 80 MPH.I heard that rear gear ratio will also make a difference(lower boost and EGT with higher gears).I have 410 in my truck.Looks about right for his truck..
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Old Mar 20, 2008 | 12:57 PM
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pwrtripls1's Avatar
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From: Katy, TX off north Mason Road.
He has what ever the higher gears were that year. 3.5x or 3.7x, I really dont know.
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Old Mar 20, 2008 | 02:35 PM
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From: Nevada
Originally Posted by infidel
I usually run more like 5-7 psi at the same speed.
EGTs sound about right.
Same here.
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Old Mar 20, 2008 | 10:22 PM
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46mech's Avatar
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From: Canton, So. Dakota
Those numbers sound pretty close to what I see on my truck; I guess maybe 1 or 2 psi less boost.
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